October Weather in Islesboro, United States

Last updated: June 24, 2025

In October, the average temperature in Islesboro, United States hovers around 12°C (54°F). Expect minimums of 1°C (34°F) and maximums reaching 19°C (66°F). Be prepared for some showers, with an average precipitation of 169 mm (6.6 in) spread over 13 rainy days. Additionally, the air tends to be quite moist, with an average humidity of 82%.

October Temperature in Islesboro

In October in Islesboro, the average temperature is 12°C (54°F), with maximums reaching 19°C (66°F) and minimums dipping as low as 1°C (34°F). This makes it a great time for travelers to enjoy a comfortable climate while exploring the local attractions.

October Weather in Islesboro: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Islesboro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Islesboro, October typically has an average temperature of 12°C (54°F), with highs reaching up to 19°C (66°F) and lows dropping to around 1°C (34°F).

Data source: Temperature data for Islesboro generated using information from the Copernicus Climate Change Service.

October Precipitation in Islesboro

In Islesboro in October, the total precipitation amount is 169 mm (6.6 in) over the course of 13 days.

October Precipitation Trends in Islesboro

The chart displays monthly precipitation patterns in Islesboro, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Islesboro, October typically receives around 169 mm (6.6 inches) of precipitation spread over approximately 13 days.

Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

October Humidity in Islesboro

In Islesboro in October humidity is 82%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and sweat-inducing, which can be quite uncomfortable for traveling.

October Average Humidity in Islesboro

This chart illustrates the average monthly humidity levels in Islesboro, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Islesboro is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Islesboro

In Islesboro in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Islesboro.

Maximum UV Index Levels in Islesboro for October

The chart shows the monthly maximum UV Index (UVI) for Islesboro in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In October, the maximum UV index in Islesboro typically reaches 5, which falls under the moderate exposure category.

Data source: Islesboro October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How October Weather in Islesboro Compares to Other Months

Weather in Islesboro varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Islesboro, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Islesboro, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	112 mm (4.4 inches)	88%	low
February Weather	-2°C (29°F)	108 mm (4.2 inches)	88%	moderate
March Weather	0°C (33°F)	89 mm (3.5 inches)	85%	moderate
April Weather	5°C (41°F)	169 mm (6.7 inches)	81%	high
May Weather	9°C (49°F)	114 mm (4.5 inches)	76%	very high
June Weather	14°C (58°F)	87 mm (3.4 inches)	74%	very high
July Weather	17°C (63°F)	100 mm (3.9 inches)	74%	very high
August Weather	18°C (65°F)	90 mm (3.5 inches)	74%	very high
September Weather	16°C (61°F)	99 mm (3.9 inches)	77%	high
October Weather	12°C (54°F)	169 mm (6.6 inches)	82%	moderate
November Weather	6°C (42°F)	145 mm (5.7 inches)	85%	moderate
December Weather	0°C (33°F)	160 mm (6.3 inches)	84%	low